JPS62104233U - - Google Patents
Info
- Publication number
- JPS62104233U JPS62104233U JP19528185U JP19528185U JPS62104233U JP S62104233 U JPS62104233 U JP S62104233U JP 19528185 U JP19528185 U JP 19528185U JP 19528185 U JP19528185 U JP 19528185U JP S62104233 U JPS62104233 U JP S62104233U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- finder
- guided
- path switching
- optical path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000011514 reflex Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Viewfinders (AREA)
- Optical Elements Other Than Lenses (AREA)
- Cameras In General (AREA)
Description
第１図は、本考案の原理を説明するための光学
系の構成を示す側面図、第２図は、第１図のフレ
ネルレンズ設置位置の詳細を示す側面図、第３図
は、第１図の変形例を示す側面図、第４図は、第
１図の他の変形例を示す側面図、第５図は、第４
図のフレネルレンズ退避機構の一例を示す斜視図
、第６図は、第５図の動作説明用の側面図、第７
図は、従来の一眼レフレツクスカメラのフアイン
ダ装置の一例を示す側面図である。
１……撮影レンズ、２……光路切換ミラー、３
，１０……フレネルレンズ、４，４０……ペンタ
ゴナルダハプリズム、５，５０……接眼レンズ、
６，６０……フアインダスクリーン、１１，２０
……枠体、１２，１３，１７，１８……支軸、１
４……レバー、１５，１６……アーム、１９……
ピン、６１……合焦検出部材。
FIG. 1 is a side view showing the configuration of an optical system for explaining the principle of the present invention, FIG. 2 is a side view showing details of the Fresnel lens installation position in FIG. 1, and FIG. FIG. 4 is a side view showing another modification of FIG. 1; FIG. 5 is a side view showing another modification of FIG.
FIG. 6 is a perspective view showing an example of the Fresnel lens retraction mechanism shown in FIG.
The figure is a side view showing an example of a conventional single-lens reflex camera finder device. 1...Photographing lens, 2...Optical path switching mirror, 3
, 10... Fresnel lens, 4, 40... Pentagonal roof prism, 5, 50... Eyepiece,
6,60...Finder screen, 11,20
... Frame body, 12, 13, 17, 18 ... Support shaft, 1
4... Lever, 15, 16... Arm, 19...
Pin, 61...Focus detection member.
Claims (1)
フアインダ側に導く位置とに切換えられる光路切
換ミラーと、この光路切換ミラーが撮影レンズの
出射光をフアインダ側に導く位置にされたときの
光路上に配設されたフアインダスクリーンと、こ
のフアインダスクリーンに結像された被写体像を
正立正像として接眼レンズに導くペンタゴナルダ
ハプリズムとを有する一眼レフレツクスカメラの
フアインダ装置において、上記光路切換ミラーを
介して結像される被写体像の予定結像面より所定
量前方の光軸上位置に収束レンズ部材を配設した
構成としたことを特徴とする一眼レフレツクスカ
メラのフアインダ装置。 An optical path switching mirror that can be switched between a position where the light emitted from the photographic lens is guided to the film surface and a position where it is guided to the viewfinder side. In the finder device of a single-lens reflex camera, which has a finder screen and a pentagonal roof prism that guides a subject image formed on the finder screen to an eyepiece as an erect image, the optical path switching mirror is used. 1. A finder device for a single-lens reflex camera, characterized in that a converging lens member is disposed at a position on an optical axis a predetermined distance ahead of a planned image formation plane of a subject image formed through the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19528185U JPS62104233U (en) | 1985-12-20 | 1985-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19528185U JPS62104233U (en) | 1985-12-20 | 1985-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62104233U true JPS62104233U (en) | 1987-07-03 |
Family
ID=31153030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19528185U Pending JPS62104233U (en) | 1985-12-20 | 1985-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62104233U (en) |
-
1985
- 1985-12-20 JP JP19528185U patent/JPS62104233U/ja active Pending
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